By mrg4 - 11/6/2014
Is it possible to record multiple clicks on a single picture, together with the x and y position coordinates for each time?
In my task the participant has to spot one or more changes in a picture. After presenting the second picture, he is supposed to click on the respective area.
I already searched for a solution and found a similar problem here (http://www.millisecond.com/forums/Topic939.aspx?Keywords=record-click-position-coordinates) but I can't transfer the solution to my problem.
I hope someone is able to help me.
Thanks,
Dominik
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By Dave - 11/6/2014
Yes, that's perfectly possible:
<values>
/ x = 0
/ y = 0
</values>
<block myblock>
/ trials = [1-2=firstpicture]
</block>
<trial firstpicture>
/ stimulusframes = [1=firstpic]
/ trialduration = 1000
/ branch = [trial.secondpicture]
</trial>
<trial secondpicture>
/ ontrialend = [if (trial.secondpicture.response != "done") {values.x = trial.secondpicture.responsex; values.y = trial.secondpicture.responsey}]
/ stimulusframes = [1=secondpic, done, coordinates]
/ inputdevice = mouse
/ validresponse = (secondpic, done)
/ branch = [if (trial.secondpicture.response != "done") trial.secondpicture]
</trial>
<text firstpic>
/ items = ("A1.jpg", "B1.jpg")
/ size = (50%,50%)
/ txbgcolor = (green)
</text>
<text secondpic>
/ items = ("A2.jpg", "B2.jpg")
/ select = current(firstpic)
/ size = (50%,50%)
/ txbgcolor = (blue)
/ erase = false
</text>
<text done>
/ items = ("DONE")
/ position = (50%, 90%)
/ erase = false
</text>
<text coordinates>
/ items = ("<%values.x%>, <%values.y%>")
/ position = (50%, 10%)
/ erase = false
</text>
<data>
/ columns = [date time subject blocknum blockcode trialnum trialcode stimulusnumber stimulusitem response latency values.x values.y]
</data>
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By mrg4 - 11/8/2014
Thank you so much! It's working perfectly fine!
Regards,
Dominik
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